Tracking chlorophyll fluorescence as an indicator of drought and rewatering across the entire leaf lifespan in a maize field

Li, Yibo; Song, He; Zhou, Li; Xu, Zhenzhu; Zhou, Guangsheng

doi:10.1016/j.agwat.2018.09.050

Cited by 51 publications

(28 citation statements)

References 56 publications

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“…In the present study, Fo increased significantly with water deficit stress compared to the control condition (Table 1). Similarly, previous studies have also reported a trend of increasing values of Fo under water deficit stress in different crops [1,14,15,62,64,65]. The specific trend in Fo in response to water deficit stress observed in our study was as follows: Ae.…”

Section: Discussionsupporting

confidence: 86%

“…During the process of photosynthesis, radiation is captured by chlorophyll and additional photosynthetic pigments, and finally transferred to the photosystem centers (PSI and PSII) where transformation of the quantum photosynthetic procedure takes place [9]. Chlorophyll fluorescence (CF) measurement is a non-invasive approach that is widely used in plant stress physiology studies, as it allows investigation of the various functional levels of the photosynthesis mechanisms [1,15,61,62]. Among the CF parameters, Fo, Fv/Fm and Fv/Fo values are very important indicators of plant health and photosynthetic activity under adverse environmental conditions.…”

Section: Discussionmentioning

confidence: 99%

“…Climate change is expected to result in fluctuations in precipitation patterns, including the enhanced severity and accelerated frequency of droughts [1]. Under these circumstances, agricultural production is one of the many sectors already affected by water availability [2].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Water Deficit Stress on Seedling Biomass and Physio-Chemical Characteristics in Different Species of Wheat Possessing the D Genome

et al. 2019

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Wild relatives of wheat serve as an extraordinary source of variability for breeding programs due to their capabilities to respond to various environmental stresses. Here, we investigated some species possessing a D genome (T. aestivum, Ae. tauschii, Ae. crassa and Ae. cylindrica) in terms of relative water content (RWC), stomatal conductance (Gs), relative chlorophyll content, initial fluorescence (Fo), maximum quantum yield of PSII (Fv/Fm), maximum primary yield of PSII photochemistry (Fv/Fo), as well as shoot fresh and dry biomasses under control and water deficit conditions. Our results revealed that water deficit negatively affected all traits; shoot fresh weight, Gs and RWC showed the highest reduction compared to the control condition. Principal component analysis (PCA) identified two PCs that accounted for 53.36% of the total variation in the water deficit conditions. Correlation analysis and PCA-based biplots showed that stress tolerance index (STI) is significantly associated with Fv/Fm and Fv/Fo under water stress conditions, suggesting that these are the best parameters to evaluate when screening for tolerant samples at the seedling stage. We identified 19 accessions from Ae. crassa and one from Ae. tauschii as the most tolerant samples. In conclusion, Ae. crassa might provide an ideal genetic resource for drought-tolerant wheat breeds.

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Section: Discussionsupporting

confidence: 86%

Section: Discussionmentioning

confidence: 99%

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Effect of Water Deficit Stress on Seedling Biomass and Physio-Chemical Characteristics in Different Species of Wheat Possessing the D Genome

et al. 2019

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“…However, some researchers pointed out that the F v /F m ratio may be suitable for drought sensitive species but not for drought insensitive species [62,63]. Li et al [64] reported that a severe drought episode during the peak vegetative growth stage of maize plants resulted in decreases in Chl content, F v /F m ratio, qP but increases in NPQ. In the present study, with the increase of nutrient spray intervals especially at 240 min, qP, NPQ and ETR of M. crystallinum decreased at a growth irradiance of PPFD 250 μmol m -2 s -1 above the growth irradiance (Fig 6B-6D).…”

Section: Plos Onementioning

confidence: 99%

Drought does not induce crassulacean acid metabolism (CAM) but regulates photosynthesis and enhances nutritional quality of Mesembryanthemum crystallinum

Chua

Qin

2020

PLoS ONE

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Physiology and nutritional quality of a facultative CAM plant Mesembryanthemum crystallinum under drought stress alone are poorly understood. To induce drought, M. crystallinum was cultured aeroponically with different nutrient spraying intervals such as 5, 30, 60 and 240 min. The long spraying interval such as 240 min resulted in lower mass of root and shoot, shorter total root length with less tips and smaller surface area, compared to short interval of 5 min. Grown under the longest spraying interval of 240 min, M. crystallinumalso had significantly higher leaf dry matter content but lower leaf succulence. However, CAM acidity was undetectable for any plants. Although M. crystallinum grown under extended spraying intervals had higher photosynthetic pigments, they utilized lesser light energy and did not dissipate heat as effectively as those grown under 5 min. Compare to other shorter spraying intervals, photosynthetic gas exchange rates were significantly reduced under 240 min spraying interval, indicating signs of water deficit stress. Shoot nitrate, total reduced nitrogen, total soluble protein and Rubisco concentrations were similar for all plants. For phytochemicals and dietary minerals, plants grown under 240 min spraying interval had significantly higher values than the other plants. Therefore, drought does not result in the induction of CAM but regulates photosynthetic performance and enhances nutritional quality of M. crystallinum.

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“…In recent years, chlorophyll fluorescence measurements applications have increased in the field of plant physiology research (Dong, Men, Li, Zou, & Ji, 2019;Küpper et al, 2019;Li, Song, Zhou, Xu, & Zhou, 2019;Madriaza, Saldaña, Salgado-Luarte, Escobedo, & Gianoli, 2019;Hussain et al, 2019). Chlorophyll fluorescence can be measured by non-destructive low-cost methods to detect photosystem II (PSII) damage in plants exposed to some type of stress (biotic and/or abiotic) (Baker, 2008;Murchie & Lawson, 2013).…”

mentioning

confidence: 99%

Chlorophyll fluorescence and biomass partitioning within light and nitrogen deficiency: An example of the use of the R programming language for teaching

Pérez-Molina

Lara

Portuguez-Brenes

et al. 2020

URJ

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Introduction: Chlorophyll Fluorescence (Fv/Fm) detects damage in photosystem II (PSII) in plants exposed to stress (biotic and/or abiotic). Objective: In this context, Fv/Fm for the diagnosis of the effect of N deficiency and light in tomato plants (Solanum lycopersicum) was evaluated. Methods: We used the software R to analyze data from an experiment consisted of two light treatments (high and low) and two Hoagland nutritive solutions (N deficiency: (-)N; and complete solution: C). Twenty tomato plants within the two light treatments, with two nutrient levels ((-)N and C) were used. For four weeks, weekly measurements for height (H), leaf number (NL), and Fv/Fm were made. On the fourth week, the dry mass partitioning (root: RMR; stem: SMR; and leaves: LMR) and chlorophyll concentration (a, b, a/b, and total) was measured. Results: We found statistically significant differences between treatments for H, NL and Fv/Fm (KW> 14,5, g.l.= 3,76, P<0,01), but no differences for chlorophyll concentration (F<2,2; g.l.=1, 16, P>0,05). In both light conditions it was higher LMR in C treatment, but with lower RMR compared to (-)N. Statistically significant correlations (% Spearman, P<0,05) between Fv/Fm and LMR, RMR, and SMR (-76%, 69%, and 37%, respectively) were found. Conclusion: Overall, we can emphasize that the Fv/Fm is a sensitive variable to the stress caused by nitrogen and light deficiency, whose progress of stress time-course can assess. Finally, Fv/Fm proved to be an indicator of the dry mass partition of stress induced by N deficiency and could be implemented as diagnostic in breeding programs.

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Tracking chlorophyll fluorescence as an indicator of drought and rewatering across the entire leaf lifespan in a maize field

Cited by 51 publications

References 56 publications

Effect of Water Deficit Stress on Seedling Biomass and Physio-Chemical Characteristics in Different Species of Wheat Possessing the D Genome

Effect of Water Deficit Stress on Seedling Biomass and Physio-Chemical Characteristics in Different Species of Wheat Possessing the D Genome

Drought does not induce crassulacean acid metabolism (CAM) but regulates photosynthesis and enhances nutritional quality of Mesembryanthemum crystallinum

Chlorophyll fluorescence and biomass partitioning within light and nitrogen deficiency: An example of the use of the R programming language for teaching

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